There's nothing wrong with that amount of blow-by from your engine. They all do about that much mist in the blowby. If you are unsure of whether you need to do rings, then run a compression test, first dry, then wet.
The filter on the end of the breather tube is just to keep dirt in the air from getting into the oil. Crankcase goes from pressure to vacuum whenever a piston goes down or up in one of the cylinder bores. When it goes vacuum, it sucks in air, which if left unfiltered, will introduce airborne contaminants into the oil.
I did see the mist in your video, and I feel that it is perfectly normal. Even brand-new engines produce some. Sometimes brand-new engines actually produce MORE blow-by until the rings and bores are broken in. That's why they all have PCV systems, breather filters in the airbox, or catch cans straight from the factory.
Some systems are more sophisticated than others. The 77 CB550K airbox accomodates some oil separation which allows the oil to drain back into the crankcase after it separates from the blowby. My 1986 GoldWing has a simple plastic oil separator/catch can which you must remove and drain whenever you change the oil. Pretty much all cars use PCV, which sucks the blow-by back into the intake air and burns it, some after allowing the oil to condense out.
